Support multiple snippets locations per extension (#45829)

This allows extensions to add more than one snippet file whilst keeping
it backwards compatible.

Release Notes:

- Added support for specifying multiple snippets paths in extensions.
da3847af7bFinn Evers committed on 1/23/2026, 1:49:44 PM· committed by GitHubparent515a840
4 files changedLine totals unavailable